flua implements fortran bidings for lua based on the fortran 2003 iso_c_compatability interface. Many of the API calls are implemented, although some of the api elements could not be implemented directly due to differences between c and fortran data structured. For example, fortran does not use the same way of representing character arrays as c, so some effort is required to translate between c compatible character arrays and fortran character arrays.
flua is an extension of the f2k3-lua project which exposes a portion of the lua api that is useful for leading configuration files.